Rainbow cupcakes

Inspired by the rainbow cake made at Omnomicon, we attempted to make rainbow cupcakes today by the same method - just to see if it would work. The hardest part was finding the concentrated gel food colorings, but I finally located them at the largest grocery store in our area. Then the fun began with 6 bowls of colored cake batter (just using a standard cake mix):


Dropped in rainbow order into the center of cupcake thingies:


The final batter appearance:


The view after baking:


And much to our surprise, slicing one open revealed a perfect inverted rainbow! Hurrah! (Now I wonder how it would look with uncolored batter to start and end the rainbow so it would have white in the middle instead of the solid purple center):

The most important part of cleanup is having an assistant standing by to lick the frosting off the beaters: